Insulation fireproof wire cable

Abstract

The utility model discloses an insulating fireproof wire cable, and relates to the technical field of wire cables. The insulating fireproof wire cable comprises a fireproof sleeve, a sheath is arranged in the fireproof sleeve, the outer surface of the sheath is connected with a plurality of limiting rings, the limiting rings are made of rubber materials, through the arrangement of the limiting rings, a net sleeve and other structures, due to the fact that a gap is reserved between the net sleeve and the fireproof sleeve, the net sleeve has a movable space between the fireproof sleeve and the sheath, and when the cable is bent, the net sleeve is not prone to deformation. Compared with the prior art, a space is reserved between the fireproof sleeve and the sheath, so that the fireproof sleeve is not easy to jack up when the fireproof sleeve is bent along with the cable, the surface of the fireproof sleeve is not easy to bulge, winding and using of the cable are facilitated, and the service life of the cable is prolonged. And the net sleeves are separated through the plurality of limiting rings, so that the length of each net sleeve is relatively short, and the influence of the net sleeves when the cable is bent is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of electric wires and cables, in particular to an insulated fireproof electric wire and cable. Background Art

[0002] Wires and cables are used to transmit electrical (magnetic) energy, information and realize electromagnetic energy conversion. Many cable failures are caused by mechanical damage, such as extrusion, wear, cutting, etc. These mechanical damages will damage the cable skin and affect its insulation and expansion properties.

[0003] Existing wires and cables can be improved in cutting resistance by setting a steel mesh sleeve. For example, Chinese patent application number CN202321522349.2 discloses a mineral insulated fire-resistant wire and cable, including a cable mechanism, which includes multiple conductive cores and insulating oil paper wrapped and fixed on the outside thereof, and the outside of the insulating oil paper is coated with a fireproof layer, and a protective mechanism, which includes a polyvinyl chloride protective sleeve, which is coated on the outside of the fireproof layer, and the polyvinyl chloride protective sleeve is adhered and fixed by fireproof glue, and a steel mesh sleeve is embedded and installed inside the polyvinyl chloride protective sleeve.

[0004] Since the steel mesh is directly embedded in the protective cover, when the cable is bent, the steel mesh will easily lift up the protective cover, causing bulges on the surface of the protective cover. The bulges on the surface will easily make it more susceptible to extrusion and wear, making the surface of the protective cover prone to damage. The bulges will also make the surface of the protective cover irregular, affecting the winding and storage of the cable. Utility Model Content

[0005] Technical issues solved

[0006] In view of the deficiencies in the prior art, the utility model provides an insulated fireproof wire and cable, which solves the problem that the cable will be affected by the steel mesh when it is bent.

[0007] Technical Solution

[0008] To achieve the above purpose, the utility model is implemented through the following technical scheme: an insulated fireproof wire and cable, including a fireproof sleeve, a sheath is provided inside the fireproof sleeve, a plurality of limit rings are connected to the outer surface of the sheath, the limit rings are made of rubber, the outer sides of the limit rings are fitted with the fireproof sleeve, a mesh sleeve is provided between every two corresponding limit rings, a gap is left between the mesh sleeve and the fireproof sleeve, and a cable core is provided inside the sheath.

[0009] Preferably, an annular groove is provided on the inner side of the limiting ring.

[0010] Preferably, a plurality of fixing rings are connected to the outer surface of the sheath, and the fixing rings are located inside the corresponding annular grooves.

[0011] Preferably, both ends of the fireproof sleeve are connected with sealing rings, and the inner side of the sealing ring is connected to the sleeve.

[0012] Preferably, the fixing ring is made of stainless steel.

[0013] Preferably, rubber rings are connected to both sides of the fixing ring.

[0014] Preferably, the surface of the fireproof sleeve is sprayed with fireproof coating.

[0015] Beneficial Effects

[0016] The utility model provides an insulated fireproof wire and cable. It has the following beneficial effects:

[0017] By setting structures such as limiting rings and mesh sleeves, since a gap is left between the mesh sleeve and the fireproof sleeve, the mesh sleeve has a movable space between the fireproof sleeve and the sheath. When the cable is bent, the mesh sleeve will move between the fireproof sleeve and the sheath to adapt to the bending of the cable. Compared with the prior art, by leaving a space between the fireproof sleeve and the sheath, the mesh sleeve is not likely to lift up the fireproof sleeve when the cable is bent, so that the surface of the fireproof sleeve is not likely to have bulges, which is beneficial to the winding and use of the cable. The mesh sleeves are separated by multiple limiting rings, so that the length of each mesh sleeve is shorter, thereby reducing the impact of the mesh sleeve when the cable is bent. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the structure of the utility model;

[0019] Figure 2 This is a schematic diagram of the internal structure of the fireproof cover of the utility model;

[0020] Figure 3 This is a schematic diagram of the structure of the limit ring of the utility model;

[0021] Figure 4 This is a schematic diagram of the fixing ring structure of the utility model.

[0022] In the figure: 1. fireproof sleeve; 2. sheath; 3. limit ring; 4. mesh sleeve; 5. cable core; 6. annular groove; 7. fixing ring; 8. sealing ring; 9. rubber ring. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0024] See also Figure 1-4 The utility model provides a technical solution: an insulated fireproof wire and cable, comprising a fireproof sleeve 1, a sheath 2 is arranged inside the fireproof sleeve 1, a plurality of limit rings 3 are connected to the outer surface of the sheath 2, the limit rings 3 are made of rubber, the outer side of the limit rings 3 is in contact with the fireproof sleeve 1, a mesh sleeve 4 is arranged between every two corresponding limit rings 3, a gap is left between the mesh sleeve 4 and the fireproof sleeve 1, a cable core 5 is arranged inside the sheath 2, the mesh sleeve 4 is made of steel, the fireproof sleeve 1 is made of cross-linked polyolefin material, the fireproof sleeve 1 of the cross-linked polyolefin material itself will not burn and has better insulation effect, so that the fireproof insulation effect of the wire and cable is better, the upper surface height of the limit ring 3 is higher than the upper surface height of the mesh sleeve 4, and the side of the limit ring 3 is in contact with the mesh sleeve 4.

[0025] During operation, when the cable is rolled up for storage, the cable will bend, and the mesh 4 will bend along with the sheath 2 in the gap between the fireproof sheath 1 and the sheath 2. At the same time, the limiting ring 3 will be squeezed by the mesh 4 on both sides. When the cable is straightened, the limiting ring 3 is no longer squeezed by the mesh 4, so that the limiting ring 3 gradually returns to its original state and pushes the mesh 4 to its initial position, so that the mesh 4 returns to its initial position for the use of the cable.

[0026] See also Figure 1-4 The utility model provides a technical solution: an annular groove 6 is provided on the inner side of the limiting ring 3 .

[0027] During operation, by providing the annular groove 6 , the limiting ring 3 still has elasticity, and at the same time, the material used in making the limiting ring 3 can be reduced, thereby saving materials.

[0028] See also Figure 1-4 The utility model provides a technical solution: a plurality of fixing rings 7 are connected to the outer surface of the sheath 2 , and the fixing rings 7 are located inside the corresponding annular grooves 6 , and the width of the fixing rings 7 is smaller than the width of the annular grooves 6 .

[0029] During operation, the fixing ring 7 is arranged so that the fixing ring 7 can protect the sheath 2 at the position of the annular groove 6, thereby improving the overall protection effect.

[0030] See also Figure 1-4 The utility model provides a technical solution: both ends of the fireproof sleeve 1 are connected with sealing rings 8, the inner side of the sealing ring 8 is connected to the sheath 2, and the sealing ring 8 blocks the gap between the fireproof sleeve 1 and the sheath 2.

[0031] During operation, the sealing ring 8 can prevent external impurities from entering the gap between the fireproof sleeve 1 and the protective sleeve 2.

[0032] See also Figure 1-4 The utility model provides a technical solution: the fixing ring 7 is made of stainless steel.

[0033] During operation, the fixing ring 7 made of stainless steel has high strength, which is convenient for use of the fixing ring 7 .

[0034] See also Figure 1-4 The utility model provides a technical solution: rubber rings 9 are connected to both sides of the fixing ring 7, and the rubber rings 9 are in contact with the inner wall of the annular groove 6.

[0035] During operation, through the setting of the rubber ring 9, when the limit ring 3 is squeezed by the mesh sleeves 4 on both sides, the rubber ring 9 will also be squeezed by the mesh sleeves 4. When the cable is straightened, the rubber ring 9 can also push the mesh sleeve 4, which is beneficial for the mesh sleeve 4 to return to the initial position.

[0036] See also Figure 1-4 The utility model provides a technical solution: the surface of the fireproof sleeve 1 is sprayed with fireproof coating, and the fireproof coating is a prior art. When the coating is exposed to fire, it can generate a uniform and dense sponge-like foam insulation layer, which can effectively inhibit and block the spread and spread of flames.

[0037] During operation, the fireproof performance of the surface of the fireproof cover 1 can be improved by setting the fireproof coating.

[0038] In summary, when the cable is rolled up and stored, the cable will bend, and the mesh sleeve 4 will bend along with the sheath 2 in the gap between the fireproof sleeve 1 and the sheath 2. At the same time, the limiting ring 3 and the rubber ring 9 will be squeezed by the mesh sleeve 4 on both sides. When the cable is straightened, the limiting ring 3 and the rubber ring 9 are no longer squeezed by the mesh sleeve 4, so that the limiting ring 3 and the rubber ring 9 gradually return to their original state and push the mesh sleeve 4 to the initial position, so that the mesh sleeve 4 returns to the initial position for the use of the cable.

[0039] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0040] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An insulated fireproof wire and cable, comprising a fireproof sleeve (1), characterized in that: A protective sleeve (2) is arranged inside the fireproof sleeve (1); a plurality of limiting rings (3) are connected to the outer surface of the protective sleeve (2); the limiting rings (3) are made of rubber; the outer sides of the limiting rings (3) are in contact with the fireproof sleeve (1); a mesh sleeve (4) is arranged between every two corresponding limiting rings (3); a gap is left between the mesh sleeve (4) and the fireproof sleeve (1); and a cable core (5) is arranged inside the protective sleeve (2).

2. The insulated fireproof wire and cable according to claim 1, characterized in that: An annular groove (6) is provided on the inner side of the limiting ring (3).

3. The insulated fireproof wire and cable according to claim 2, characterized in that: The outer surface of the sheath (2) is connected to a plurality of fixing rings (7), and the fixing rings (7) are located inside corresponding annular grooves (6).

4. The insulated fireproof wire and cable according to claim 3, characterized in that: Both ends of the fireproof sleeve (1) are connected to sealing rings (8), and the inner side of the sealing ring (8) is connected to the sleeve (2).

5. The insulated fireproof wire and cable according to claim 4, characterized in that: The fixing ring (7) is made of stainless steel.

6. The insulated fireproof wire and cable according to claim 5, characterized in that: Both sides of the fixing ring (7) are connected with rubber rings (9).

7. The insulated fireproof wire and cable according to claim 1, characterized in that: The surface of the fireproof sleeve (1) is sprayed with fireproof paint.

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